- Joined
- Aug 24, 2019
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- 36
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I have 15 kilo sand and 30 kilo dry rockHow much rock or sand do u have? It has to be balance for the system to work. Nowadays reefer like less rock and bare bottom. It might look good but it reduces a lot of surface area for the bacteria to populate. If you nutrients production is larger than the bacteria consumption then your nutrients will keep rising or not reduce.